Symptoms and Causes

Overview Dementia refers to a set of symptoms that affect memory, thinking, and social abilities severely enough to disrupt daily life. It’s not a single disease,…

Overview Coronary artery disease (CAD) is the most common heart condition in the United States. It affects millions of people each year. This condition happens when…

Overview Seizures occur when the brain experiences a sudden surge of electrical activity. These episodes can change behavior, movement, feelings, and consciousness. When someone has two…

Overview Clostridioides difficile (C. diff) is a bacterial infection affecting the colon. This bacterium can cause symptoms ranging from mild diarrhea to severe colon damage, which…

Overview Keratosis pilaris is a harmless skin condition that creates dry patches and small bumps on the skin. These bumps commonly appear on the upper arms,…

Overview The rotator cuff consists of muscles and tendons that wrap around the shoulder joint. These tissues keep the upper arm bone securely positioned within the…

Overview Indigestion, sometimes called dyspepsia or upset stomach, is a feeling of discomfort in the upper abdomen. It’s not a disease but a set of symptoms,…

Overview Stomach cancer, or gastric cancer, can develop in any part of the stomach. In the United States, most cases occur at the gastroesophageal junction—where the…

Overview Cavities form when the hard outer layer of teeth gets damaged, creating small holes. These holes can grow larger and deeper, leading to pain, infection,…

Overview A tooth root infection happens when bacteria create a pocket of pus near a tooth. These infections often develop at the tip of the tooth…